Ti-based glassy alloys in Ti-Cu-Zr-Sn system

• 作 者: WANG ZengRui DONG DanDan QIANG JianBing WANG Qing WANG YingMin DONG Chuang
• 机 构: Key Laboratory of Materials Modification (Ministry of Education),Dalian University of Technology,
• 出 处: Science China(Physics,Mechanics & Astronomy)
• 发表日期: 2013年07期
• 关键词: glassy amorphous explain hardness dense alloyed crystalline alloying ribbon diff

Bulk amorphous formation in Ti-Cu-based multicomponent alloys, free of Ni, Pd and Be elements, were studied using the cluster-plus-glue-atom model. The basic cluster formula was revealed as [Ti9Cu6]Cu3 to explain the best binary glass forming composition Ti50Cu50 =Ti9Cu9 , where the CN14 rhombi-dodecahedron Ti9Cu6 was the principal cluster in the devitrification phase CuTi. This basic cluster formula was further alloyed with Zr and Sn and a critical glass forming ability was reached at (Ti7.2Zr1.8)(Cu8.72Sn0.28) and (Ti7.2Zr1.8)(Cu8.45Sn0.55) up to 5 mm in diameter by suction casting, which was the largest in Ti-Cu- based and Ni-, Pd- and Be-free alloys.

Bulk amorphous formation in Ti-Cu-based multicomponent alloys, free of Ni, Pd and Be elements, were studied using the cluster-plus-glue-atom model. The basic cluster formula was revealed as [Ti9Cu6] Cu3 to explain the best binary glass forming composition Ti50Cu50 = Ti9Cu9, where the CN14 rhombi-dodecahedron Ti9Cu6 was the principal cluster in the devitrification phase CuTi. This basic cluster formula was further alloyed with Zr and Sn and a critical glass forming ability was reached at (Ti7.2Zr1.8 ) (Cu8.72Sn0.28) and (Ti7.2Zr1.8) (Cu8.45Sn0.55) up to 5 mm in diameter by suction casting, which was the largest in Ti-Cu-based and Ni-, Pd- and Be-free alloys.